Find the missing factor.20x2 - 7xy - 6y2 = (5x + 2y)( )
A. 4x + 3y
B. 3x - 4y
C. 4x - 3y
D. x - 6xy
Answer: C
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Convert the numeral to Hindu-Arabic form.
A. 263,330 B. 292,130 C. 299,330 D. 237,410
Solve the problem.A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 14 inches by 21 inches by cutting out equal squares of side x at each corner and then folding up the sides as in the figure. Express the volume V of the box as a function of x.
A. V(x) = x(14 - x)(21 - x) B. V(x) = x(14 - 2x)(21 - 2x) C. V(x) = (14 - x)(21 - x) D. V(x) = (14 - 2x)(21 - 2x)
Write the partial fraction decomposition of the rational expression.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Solve.Each week a soft drink machine sells x cans of soda for $0.75/soda. The cost to the owner of the soda machine for each soda is $0.10. The weekly fixed cost for maintaining the soda machine is $25/week. Write an equation that relates the weekly profit, P, in dollars to the number of cans sold each week. Then use the equation to find the weekly profit when 92 cans of soda are sold in a week.
A. P = 0.65x - 25; $34.80 B. P = 0.75x + 25; $94.00 C. P = 0.75x - 25; $44.00 D. P = 0.65x + 25; $84.80